Apparatus for sifting coal-ashes



nume sanas Pg@ t L. I-I. PROCTOR, OF EAS'I` SAUGUS, MASSACHUSETTS.

APPARATUS FOR SIFIING COAL-ASI-IES, 86C.

Specification of Letters Patent No. 20,662, dated June 22, 1858.

To all whom it may concern:

Be it known that I, LEVI H. PROCTOR, of East Saugus, in the county of Essex and State of Massachusetts, have invented an Improved Apparatus for Sifting or Screening Coal-Ashes or other Matters; and I do hereby declare that the same is fully described and represented in the following specification and the accompanying drawings, of which- Figure l, is a side elevation of it. Fig. 2, a vertical and `longitudinal section of it. Fig. 3, a transverse section of it.

The case, A, of the sifter is divided into two chambers, a, b, by means of an inclined partition, B, arranged in the said case, as shown in Figs. 2, and 3. In the superior chamber, the sieve, C, is placed, while, the inferior chamber, if desirable may contain a drawer, D.

The sieve C, is supported by journals, (Z, (Z, within bearings formed in projections, e, e, of a rectangular frame, E, that is supported on rails or ways, F, F, afliXed to opposite sides of the superior chambers, such frame E, having an arm,'G, extending from one end of it through the side of the case, and furnished with a stud and friction roller, f, to enter a grooved cam g, xed on a shaft, z, the same being so that during the revolutions of the shaft, a reciprocating rectilinear motion may be imparted to the frame E, and the sieve.

The sieve is applied to its frame so as to be capable of being turned over or tilted laterally in a manner so as to discharge from it any matters which may be toolarge to pass through its meshes, and for this purpose there is a wheel or pulley, H, fixed on one of the journals of the sieve as seen in Fig. 2. To the periphery of this wheel, a cord, I, is fastened and wound about the same and from thence carried upward through the top of the case. By pulling on such cord the sieve may be turned over in one direction. If necessary, a weight may be atlixed to one side of the sieve, in order that the power of gravity may be employed to facilitate or cause the sieve to return to its original position when the cord is relieved of the pulley force. Furthermore, the superior or sieve chamber is provided with two discharging orifices or passages, K, L one of which (viz. K) is made through the bot-tom or partition, B, while the other (or L,) extends out of the side of the sieve chamber and just above the lower end of the inclined partition, B, as shown in Figs. l, and 3.

The passage, K, is furnished with a hinged iap or valve, M, of su'Hicient size to close'it, it being so hinged to the partition as to be capable of turning downward into the inferior chamber of the case, and so as to permit any materials dropped from the sieve to pass through the opening, K, and into the drawer of the inferior chamber.

yFurthermore, this valve, when drawn upward closes the opening, K, and constitutes with the partition a chute to direct any matter which may be received thereon, toward and out of the passage, L.

From the valve or flap, a cord, N, is led around a fixed pulley, O, and from thence to the sieve the whole being in such manner as to cause the flap or valve to be raised upward and close the opening, K, during that rotary movement of the sieve by which its contents are to be discharged from it, the return rotary movement of the sieve allowing the gravitating power of the iap to cause it to fall and open the passage, L.

From the above, it will be seen that coal ashes or any other material may be sifted or screened, by the apparatus above described, the finer portions being received in the drawer, and the coarser parts subsequently discharged out of the opening, L.

I do not claim the application of the sieve, C, to its vibrating frame, E, in manner so as to enable such sieve to be tilted or turned over laterally so as to discharge out of it such contents or matter as may not be mall enough to pass through its meshes,

Vhat I claim isl. The arrangement of the inclined partition or chute, B, and the two discharging openings K, 'L, with respect t0 the sieve, C, l passages K, L, substantially as described 10 made capable of being revolved in manner during the rotary or tilting movements of substantially as set forth. the sieve.

2. I also claim in combination with the In testimony whereof, I have hereunto set 5 discharging passages K, L, (arranged so as my signature.

to lead out of the sieve Chamber as de- LEVI II. PROCTOR. scribed), a Hap or valve M, so combined or Vtnesses: connected with the turning sieve, C, as to L. LYONS, operate With respect to the tWo discharging F. R. HALE, Jr. 

